I need to inflate my Brompton's tires. I tried to use my Joe Blow floor pump but it was pretty much impossible to get it to go over the valve due to the size of it and needing to get around the spokes. I've seen some people recommending a Lezyne Floor Pump, but there are lots of them out there and I'm not sure which one to get for a Brompton. Some forums recommend a Lezyne for Brompton but I can't find that anywhere. Does anyone have suggestions for specific products?

Also, I tried inflating the rear tire while the bike was fully unfolded and the bike kept slipping and crashing to the ground even though I had it propped against a wall (I don't have someone to hold it for me). I then tried folding in the rear tire so it's in the "kickstand" position, but then the tire keeps rolling forward when I try to attach the valve. Is there an ideal way to position the bike when trying to inflate the rear tire? I don't want to keep dropping it to the ground as you can imagine and am at a loss for how people are doing this. Videos on Youtube don't seem to address this.

Thanks in advance for any guidance.