Some good pointers cheers, the switch is mostly just for a change & to see what kind of exercise routine I prefer (while knowing it's not going to be 100% optimal for my intended results) - more to keep it interesting.
Want to do a month of that to burn off the last bit of fat, then a few months on a surplus & see what kind of gains I've made - then most likely move back to a compound based system.
A few minutes of HIIT a day doesn't seem too bad so far, I recover from it reasonably quickly now I've been doing it 3 times a week for the last couple of months - the only difference would be that I'd not have wrecked legs when I started on a few of the days.
But you may be right, so I'd drop some of the HIIT if it proved too much.
I'm sitting at just under 12 stone now, so don't have that much to loose to get to a reasonable body-fat percentage to start bulking.