Opinion on lens additions.... i know, i know... played out and all but different?

currently using a sigma 18-125...

i want to add a lens with a large aperture for nice portraits, also want to add a lens for indoor sports in a well lit (brand new) facility, and macro shots...

i'm on a limited budget, so...

i'm wondering do i simply go with the tamron 90, or a sigma 105 or canon 100 (one of the three, not specifically which one) and knock out the portrait and macro in one swoop?

or

simply get the canon 250D macro lens to go on top of my current lens and also get the 85 1.8 which i could also get the 250D for.

Thoughts? Suggestions?
--
Go EAGLES!!!