I had to search for an image of that lathe to understand that you're up against.
That thing is tiny.
What you need is a way to gang the drills, and have them all be about the same length. That's fairly easy if you use screw machine drills. They're nice and short. Get good quality drill bits that have a modified split point. Then they'll be self centering, and you can eliminate the need for a center drill.
But then you have the problem of the reamer. The solution may be to just cut the reamer down to length.
If you can gang them, I highly recommend it. Changing tool holders every 20 seconds will get really old, really fast.