those are 2 separate issues (# of hrs you can dedicate per week, vs, whether you are in position to negotiate for a weekly instead of hourly rate) if anything,

those are 2 separate issues (# of hrs you can dedicate per week, vs, whether you are in position to negotiate for a weekly instead of hourly rate) if anything, knowing how much you can do (10 hrs of work) per week, makes it easier for you to propose how much value you can provide each week, no?