Like others, i gutted our kitchen, re-plastered and re-fitted a completley new and totally different laid out kitchen. Then laid 35sqm of karndean flooring.
I'm happy with the result, but i can see errors in my work that pro's would not have made. Luckily i had no worktop jointing to do. I did all the plumbing, partition building, and power points/cabling (got sparky to test and certify) However the saving i made by NOT employing someone outweighed the bits that aren't spot on tbh. And the feeling of accomplishment added to that.
I'd suggest 'finding' the time (easier said than done i know), then get someone in to do the jointing.
Homebase surely can't be the only ones who do the colours you're after?!
Either way, good luck.