Colemak uses my left pinky too much

I use the Caps Lock ley on my left pinky as backspace to limit my reach when using the backspace key. This has now made my left pinky very utilised on Colmak.

It is responsible for backspace, left shift, the 'z' and 'q' keys, and most importantly, the 'a' key. This is the second most used letter in the English alphabet and I would like a work-around, since this is now putting strain on my left pinky.

I would like rather a key switch that would still fully utilise the upsides of Colemak, or a new layout with similarities to colemak but has the 'a' key in a more comfortable position.

Thanks in advanced.