ppl aren't likely to give u money. im not going to, and i bless the fact that my fc list is full =D I am willing to give you advice:
1. This was mentioned before, but GET FOREIGN FRUIT. Thats how I got 500000 of my several million bell fortune and all of the gorgeous set and a fountain and windmill and biggest house with flag and... oops, im rambling.
2. This is a great way to earn money. Put, say... 99000 bells into your account (not to pay off morgage. select deposit). Then, go onto the WII MENU and time travel 3 years. You will earn a 99,999 bell profit. Keep doing this, and you'll get super rich in just a few hours.
3. Turnip Market. Buy turnips w/ all of ure money, and sell them during the week. The price changes after 12 noon, so ull have different morning and afternoon prices.
I STRONGLY suggest option 2, because its a no-risk, FAST process that gets u rich. If u don't want weeds though, put pads all over ure town, they'll prevent weeds. Hope I helped.