Naeem, it's been a while since I did the maths, but most modular routes should cost nothing like £70k. Hopefully you'll be more in the region of £40k.
For funding, there are many discussions around it on this site. I'd personally suggest getting a full-time job with some part-time work on the side. Get a business plan together, and approach a bank. They appreciate it, and it shows you're willing to put everything you have into it. Plus, it reduces your loan.
Flying appears cheaper in the USA, however, for the average pilot, going to the USA and coming back to the UK for a conversion will equal the cost out, possibly costing you more.
And most importantly, if you haven't. Engage in the lovely "Exercise 3". It'll cost you around £100, but could save you even more!
