Hey Harry B, saw you liked one of my previous posts, cheers! If you're looking to build up your kit bit-by-bit then I'd suggest you get a hopper first. A tank is just a tank at the end of the day. You might be able to get a lighter one than the sites usually hire out, but it isn't very exciting. I would suggest, if your budget will allow, getting a marker and bottle together at some point in the future. If you get a rotor just now then you can use it with the markers at sites, which is something that I did when I was starting up. Most hire markers won't actually benefit a massive amount from an electronic feeding hopper (as their fire rates are pretty low and you'll almost always just have a single trigger) but I liked it!