If your givnig yourself 2 years before you start, you can get as many normal females right now as you can. That way in 2 years, they are sexually mature, or maybe a year off.

Once you have your females growing, somewhere in the next year or so you can pick up that spider if you still want it.

In the short term you could try and find the biggest female you can afford, and at least make some pastels, or albinos hets within the next year or so.