Not 100% sure but looks like shift is 1.75u (same width as caps lock)? If so that cap is common, usually shown next to an FN key intented for use on a 60% board. 2u caps for the spacebars are less common, one option would be getting an SA set as the numberpad + and Enter caps will be row 3 which is also commonly used for the bottom row.
Basically when you get a non standard board you have to look really carefully before pressing the buy button. Feel free to post any set you're interested in and I'll check it
Edit: Looking again at home are the 'spacebars' 2.25u (same width as enter)?