Unless your wife is 100% behind you it is going to be difficult. Even if she is 100% behind you it is going to be difficult.
Basically if you can afford to dump £45-60k down the drain and not feel it then follow your dream. Dont forget the current vouge for buying type ratings will add at least £20k to your final cost.
You will not see a return on investment for at least 3-5 years (assuming you find paid aviation employment straight after completing training)
If you assume that you will have to find non-aviation employment after training then the psychological brick wall of a stack of PFO's wont be so devastating.
It is important to keep the significant other fully informed and let them know what is happening. If you can spare some cash, pamper the wife. It will reap dividends later on. Trust me on this one.
The other question you must ask yourself is can you and your family cope with the enforced absences while training and the stress during training; you are likely to be away from home for at least 5 days a week, and probably studying during the weekends, you will be stressed.
A.I.D.S. (Aviation Induced Divorce Syndrome) is a very real risk. Is becoming a pilot worth the risk of trashing your family for? Be very careful with this. You must be a very good time manager.
Don’t start this project without the support and backing of your partner. she is going to become effectively a single parent family while you are training.
The whole project is physically, emotionally and financially draining, and not just for you but for your family as well.
This is not intended to put you off, just the likely reality of what life may be like during and after training.