How often are you moving pins in and out would be the first question i'd ask myself. If it's only a couple of times a year save all the heartache and make yourself a ramp out of wood.
A ramp won't work because when the room has pins set up you'll be rolling down into a pin. There's only just enough room for a tombstoned pin to be taken off the sack truck and turned around to go to its spot.
I think a ramp would have to be really short and steep and still wouldn't have enough room without risk of it rolling into a set up pin
Whether you raise the floor or not, it's not going to give you enough room to get a tombstoned pin past there or shut the door?
The room fits 7 along the back wall and until Pinfest I had 7 in there, all set up. I can get them in and out tombstoned. The issue is the drop from both doors which makes it hard without help and no offense to Claire but 9/10 when I ask her to help get one down the step by taking the weight, it ends up dropping or one wheel of the truck drops a millisecond before the other meaning the truck goes at an angle and the pin can tilt and hit the door frame.
Plus the temporary step is ugly as hell.