Farmer boy that must have taken a lot of farting about to complete your modular in 16 months! Well done anyway.
Mooney man, if you do decide to go integrated then check beforehand how they will convert your flying time. One school I asked said if I had a PPL they would take 20 hours off it or come to some agreement with the total cost of the course.
Keep an eye on my post 'PPL then integrated course?' for anything about this. Like you say though, it could render your PPL seemingly worthless, however you'd be well ahead of others when it came to practical traing and would be able to relate the theory so much easier.