Back again and hopefully able to post a couple of pics!
Note: He does have two hides but I had removed the other in all pics so I could get a better view of him
I am almost certain he is going into shed as I have caught him bathing his front end in his water at night and often stretches his nose up against the walls of the tank. The one eyelid remains more cloudy than the other, but it hasn't got any worse. To be honest it does concern me a bit, although i'm not at the stage of freaking out just yet.
This is Junior when I got him at what I was told 16 weeks
He was being fed a pinky every 7 days and as thought this must have been a snack. I went and bought a small rat first, but it seemed a tad too big so offered a jumbo mouse last night which was his first feed from me. Feeding turned out to be fun as he popped his head out of the hide, looked at the mouse then turned to me as if to say "ok, whats the deal here?". I immediately thought shoot, I could be in for a long run here. However, a few dangles and dances later and he changed from inquisitive to let me at it mode! The whole process took less than 50 seconds and he was firmly coiled leaving me a happy father!

Took a quick look this morning and still not convinced that the couldn't have handled the rat given the hardly noticable bulge in his girth. Picture below and appreciate any comments on this...
The following is Junior with the f/t jumbo right after taking it. I didn't want to disturb unnecessarily so its not a good pic. Gave some thought into feeding outside yet as many have said it doesn't matter, and can even deter when in shed, I decided to let him have a go inside where he feels secure.
Last for now with him stretched out to give an idea if anyone can comment/agree/or not, on age and size to feed ratio.
I'm looking now for a infrared temperature gun that will suffice for now with the one set-up, recommendations appreciated (especially any in the UK to keep delivery low and quick!).
Back soon with updates, Cj