Probably a few prudent comments above but I did go ahead and ordered a Les Paul Junior kit, £135 delivered not cheap, cheap but I'm hoping for something reasonable. I have a few neck related tools tools fret rocker, notched straight edge but will but a decent crowning file (probably go for something from Crimson in the UK), I'll do some searching round our local kitchen worktop suppliers see if I can get some corian for the fret levelling beam but otherwise will buy a dedicated tool.
Hopefully the neck will be reasonable and not need too much work but if it is Steve Robinson Manchester Guitar Tech is very reasonable and has a great reputation so would let him take a look (last resort though).
All being well I'll do a build thread to show my progress.
I'll take my time and hopefully do a good enough job to encourage me to work towards building from scratch.
I have done basic setups on around 12-15 guitars and always felt I've improved the playability of them so if the neck doesn't have any issues I don't have any worries.