Planted Tank Obsessed
Join Date: Mar 2010
Location: Grand Junction, CO
I'd start over with a new sustrait in the 150, and just move the canister filter over after you have the new tank all set up.
You could get your second filter and run it on the big tank while it's cycling and then move the other filter over when you take the fish from the old tank.
As far as a heater... an Eheim Jager heater would be my choice. I've heard stories of people running one of those for over a decade and still going strong. And I've never heard of one frying a tank either. When you have that kind of an investment I'd go for the good stuff.
You could do one large heater, or on a tank that big, I'd go with 2 smaller ones. One on each side. A couple 200 watt Jager heaters would be perfect. They tend to heat more gallons per watt than the cheapies.