Just my personal thoughs and what I would do if it were me...If I could find a trustworthy sitter or someone to pop in and feed I would opt for that over a cattery. I'm sure your kitty will be more comfortable in their own home. When my sister went camping for a few nights my Mum and I took it in turns to catsit and Jasper was fine.
As you're going away so often (lucky you btw, sounds great, i'm green ) maybe it's the best option? Do you have family or friends who could do that for you?