Is the pipe coming out of the wall copper? If you're not up to soldering on a 90, you could just (after turning off the water to the house or area, of course) cut it an inch or so from the wall and install a compression quarter-turn angle stop right there, then use a braided stainless flex hose to connect from there to the toilet. Turn the water back on and voila! It's really not advanced plumbing to install a compression angle stop; someone at a really good hardware store (not an apron at the big box) or a good plumbing supply can discuss what you need and how to do it. (You don't want to cut the pipe right at or just off the wall because if you want to replace the stop later, you want to leave a little pipe so you can cut off the old compression fitting if you need to and install a new one.)
A quarter-turn compression angle stop looks something like this, so you can see how easy it would be to attach the braided hose to the top and run the other end to the water inlet on your toilet.
Photo of quarter-turn compression angle stop
Also, if the picture I showed you is going to be too deep to fit, Dahl makes a quarter-turn valve where you just compression-fit the end over the pipe, and the 90 is sort of built in. Have a look at this PDF:
Dahl Toto toilet install kit
And here's a video of a dude doing what I'm talking about with an angle stop for a sink. Pretty straightforward process.
Installing Angle Stop
Pros, please correct me if I'm wrong about this.
PS Dumb question: you said "the first set of bolts". Is this an old-timey toilet with two sets of attachment points on the floor on
each side of the toilet? I had a couple of those. If so, just make sure the bolts you measured to were actually the Closet Bolts, and not just some screws into the floor (i.e. make sure you don't really have a 14" rough-in, say). I'm sure you can tell which bolts are the closet bolts, but I didn't want to let that pass without double-checking.