To do or not to do Medcine

I am looking for a bit of advice on anyone who has started to study Medicine in their late thirties with a high level of financial responsibility on their shoulders.

I am 36 years old and am in my third year of nursing. I have loved the degree and the experience gained but feel that I want to carry on and study a four year accelerated course in Medicine.

The issues/concerns I have with going for it are firstly my age. I will be 41/42 and entering my foundation years. What are the chances of career progression at this age?

The second issue is money. I am the main bread winner in my household (other half and 2 young kids). My typical week has involved a student week of 40 hours and 16 hours paid work as a HCA on the hospital bank. I am wondering how feasible would it be to work bank nursing shifts and study the accelerated course at the same time. Although the actual work from the nursing degree has been straight forward, juggling every other aspect of life has been a strain.

Is it a similar format in the medical degree, placements all week?