Snappiness can come in many forms. I have SBC 350 Studebaker with a very low 1st gear (3.06) 700R4. Even with 3.08 rear gears and tall, 225-60-16 tires it launches quite well. The worse part is that 4th (overdrive) is only good on the freeway and is about 1,700 RPM at 65 MPH. Otherwise around town it is three speed.
My Turbo Pinto has the 3.97 1st gear and also winds out fast. Initially the 8" rear I put in had 3.00 rear gears. If it was all about power runs and "feeling" the turbo I actually liked those gears. I'd just slowly push the pedal to the floor and the car seemed to endlessly accelerate. HOWEVER, during everyday street driving it was a pain. The sweet spot on any gear was off from the posted speed limit. One gear was too high and the other too low. I went to 3.40 and everyday driving is far more pleasant. That said power runs are just not the same. The car gets to the 5,500 RPM limit where it weezed over far too soon and instead of the perpetual acceleration with the 3.00 gears it just seems to go out of breath quickly and I have to shift.
An even worse example was my Datsun 510 that had a 3.90 rear and 215-50-13" tires. I was shifting into 3rd gear before I crossed an intersection. 65 MPH on the freeway was 4,000 RPM. Thankfully I was able to find an early 240Z with 3.36 gears and it made all the difference. You could feel the torque of the engine pulling the car where previously it was like a 10 speed bike in 1st gear going down hill where the riders pedaling couldn't keep up.
So, I say all that to say the trike will probably be lighter than a car and the presumed 3.08 gears might actually be rather effective. I had an ancient Volvo 544 and a Honda CB77 (305) and the shift to second gear with those vehicles were some of the most pleasant experiences I have had driving.