I'm currently in a similar position although I manage mine as follows:
I am taking the ATPLs DL over 18 months. I allow 10 hours a week for studying. So a typical week will see me study 3 x weekday evenings for 2 hours after work and 4 hours over the weekend.
I also try and do around 2-3 hours flying each week, usually at weekends. Although 2-3 hours flying a week 'should' see me build around 100 hrs over a year, I expect that due to weather it will take me around 18 months to get them. So should hopefully tie in nicely with the end of my ATPLs.
I am yet to sit any exams so can't tell you how successfull this whole thing is. However, be careful - choosing this way will take a lot of dedication and sacrifices - I have found it hard many times and think 'is it all worth it?'....However, we all know what the answer to that question is, so most of the times I push through somehow...