That will be a good size and the two of you will be happy.
I highly recommend getting doors wide enough to hold 2 bowls and have 2 of those doors. Also, a couple of their shelf rests and instead of getting locks for the cages ask her to sell you instead the bar that drops down into the hole as I have used that on the cages now for several years and Kalea (my little monkey) has still never been able to slide it up far enough to remove it. Beats having to deal with locks all the time too.
Another recommendation is getting a couple of the Side Mount Perch holders. If you ever get any of the different woods that are cut into something like 12 inch pieces you don't have to worry if it comes with the SS bolts or find the XL washers to fit it though I have found the right size at LJO Leather. You just screw the perch onto the holder with a couple of screws underneath and you are done. Love it!
They are great at doing customs stuff too. I needed a stand that Kalea could not climb down off of. She had an Animal Environments stand that she would slide down that pole like a fireman slides down in the fire house. Mornings would go something like this: I walk over to the fridge, open door and close it right away because would climb down the other stand she had. Pick her up, put her back, go back to the fridge, open door and maybe be able to grab the milk before she hit the floor and was off. Pick her up, back to the fridge and maybe be able to open the door. The problem with her being on the floor is she would zero in on stuff and put holes in it or grab a piece of the wood work and take a chunk out quicker than you think possible. My kitchen cabinets are wood too. I love my babies but there are limits.
They made me up a stand with the base the same as they make for the cages, roll of paper underneath and a 3 inch post that Kalea has never climbed off of. I got the manzanita wood for the perch part from Bird On The Rock as Tricia does not sell the wood any more but I got a really wide one for it and am just thrilled how it all worked out.
We also have a manzanita play ground that had to be suspended from the ceiling because of that same little girl not staying put but at one point (and I think it is the little girl once again) the one end got chewed to the point it came apart at the corner and not supported from the ceiling. I contacted EH once again and had them build a 60x24 inch SS frame that the wood just rests on. The frame is what is attached to the SS cables and hung from the ceiling. Now, when a piece of that wood gets so chewed the rest of the structure still stays intact and I can add other wood anywhere I need/want to.
It is wonderful that I can yell 'HELP I need XYZ', can you do this and they come through for me.