First off, welcome to Woodworking Talk! Woodworking is a fun and relaxing hobby!
As for your tools, great things can come from humble beginnings! Sandpaper and green scrubby pads are going to be your friends in the near future, I can see that! Once you get parts free of rust be sure to wax them with a silicone free wax (i.e. Johnson's Paste Wax available at most home sores). I will caution you on the oil part, however. Oil tends to attract sawdust and will then turn in to something that clogs and binds things! A dry film lube is good for the arbor tilt and blade lifting screws and it won't create a mess like oil will.
Now then, at the risk of sounding like a bit of a snob, when you get a few dollars, sell the direct drive saw and opt for a bit better and move up to 10 inch. For about $150 or so, you can move in to a belt drive contractor's saw with a fairly decent fence system. Look around on CL and take your time, the right deal will come along.
Your band saw is a keeper and the miter gauge on your table saw should fit it without issue. You are most likely aware of this already, but just to make sure I do my part, Youtube is a great resource on tool care and projects that will make your tools more versatile. Naturally, questions here will also yield a plethora of answers that will assist you.
Again, welcome and I look forward to more threads by you!
But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy. James 3:17