Start off by revalidating your PPL - that puts you in a stronger position straight away, especially with 400+ hours. Then think very carefully about the pros and cons of integrated vs modular. You could always use the money saved during the modular route to do a FI course and spend a year or 2 instructing? Plenty of FI jobs around at the moment for decent people and it gives you more options, as well as staying current rather than sitting sending out CVs from the ground for 6+ months.
I've certainly had no complaints about the quality of training I received during my modular course, although it does help to do CPL/IR with the same school as I did. I struggled to put any negative points at all on my end of course washup - even the free coffee & tea were drinkable, certainly beat pusser's instant!
Oh, and finally... Good luck!!
(23, chopped on FHT @ DEFTS, now CPL/IR with first time passes in all exams & flight tests - the pressure's a different type, so you shouldn't struggle with the flying.)