Pratap,
To get more out of your hotronics, not only unbuckle the bottom 3 buckles between runs but also wiggle your feet (not just toes) vertically when you get on the chair to open up lots of opportunity for enhanced circulation. Unbuckle and wiggle them even on T-bars and Pomas. Cut slits in your boot gloves to allow the buckles to protrude so that it is easy to buckle / unbuckle.
Don't turn on the hotronics until after a couple of runs because even a slight amount of perspiration from trudging up to the lift etc. will make for a cold day. Apply heat once the boots cool down some. If you're man enough to do it, apply an antiperspirant (not deodorant) to your feet and between your toes an hour before you boot up.
This works for me with 95mm last plug boots and tight race foam liners even though I have a wide forefoot.
PS given the price of hotronics batteries, use some kind of leash to tie them down because the metal clip can slide off of your booster strap. (the hotronics strap brackets made for this purpose are better but batteries can still come loose with them.)