Keep in mind as you design your rig that how much thought and detail that goes into the design of the system from the Welch pump up to the rig WILL substantially impact how well things go long term.
On the two extreme ends of design one can just hook a rubber hose up to the pump and run it across the room to your rig OR you could place the pump one foot from the rig and plumb it with stainless steel pipe up until the one inch of polymer hose to connect it.
On the absurd bad end you will forever be fighting vacuum for several reasons. First all polymers and rubber are permeable. They not only allow gas through, like hydrogen and small atoms but they themselves can be a source of gas under deep vacuum. Further, with a flexible hose of any design the pump must dedicate horsepower just owing to the fact the hose is not rigid. The vacuum will shrink it but the force to shrink it will reduce the ability to pull a deeper vacuum as opposed to rigid steel pipe. Polymer also can absorb the terpenes and then it can be a matter of just throwing it out and replacing.
Stainless steel is more expensive and not as flexible in placement but it will not allow even hydrogen atoms past and does not soak up anything. It does not eat up vacuum force just trying to collapse it down like polymer and in the end even it needs to be cleaned it can be cleaned with powerful solvents (rubber will disolve) and then can be baked in an oven for ultimate cleanliness. Cost is the downside but ONLY if you factor in initial purchase.
Further, I advise two vacuum gauges for a start up. I got a great digital HVAC portable gauge that reads down to ten microns but owing to the design (rugged) is not accurate down that low. It was meant for evacuating HVAC coolant lines and once they get to below 500 microns they call it good. The nice thing about my Robinair digital is it has also colored backlighting and a logic circuit. The ciruict is GREAT at detecting a system leak when pulling down vacuum and turns the backlight red. Yellow means there is still gas to evacuate. Green means gas has been evacuated and no leaks detected. Note that with polymer hose only after about a foot or so it never gets to green and stays yellow as a rule. The circuit is rigged to detect residual gas and outgassing and the “rubber band” effect on pressure always indicates system not yet evacuated but no leaks.
This first gauge is the go to gauge for getting the system up and running. It can be moved from point to point and can quickly check and give you that visual indication. However the portable gauge is not accurate enough to really run in a SPD as the process gauge. For that I recomend a Pirani based sensor system. They are spendy but with a Pirani sensor installed you no longer have to guess about a great many things once you get an idea how to interpret the data.
Finally, do not take lightly the sheer volume of contaminate that is going to be gulped by your vacuum system. Configure the sensitive Pirani sensor vertical to the flow of vacuum. Use KF-16 (typical of pirani sensors) fitting centering rings fitted with screens to isolate the sensor further (the screen equipped centering rings are spendy but a must have here). Lastly, configure your system vent valve so when open to vent fresh air that the valve vents it past the pirani sensor (using a T joint pipe) and towards the vacuum pump to further discourage contamination.
The best solution I suggest is all stainless steel fittings and valves up to the rig. I use a six foot stainless steel bellows from pump up to the process. Keep polymer hose runs as short as possible. Use Nalgene or better thick wall polymer for the coupling between SS and glass. Use your portable to dial in the design and find problems but my suggestion is to rely on nothing less than a pirani style sensor for operations. A dial gauge will tell you no useful information and a portable gauge that loses accuracy below a thousand microns is also of no real value as I see it for actual operation of your still.
Good luck. There are many riddles to solve when going lone wolf but you may find that doing it yourself piece by piece gives you far more insight than an installed package somebody else figured out? Education is always spendy but hands on failures tend to reinforce concepts better than any other learning experience I am aware of.