At the rate you're flying you're six months away from having your ATP. Target that and not necessarily you're CFII. Comm/MEL, ATP.

PSA has a CLT crew base. Not sure if it's junior or senior but you should be able to get there eventually. Keep out the regional forum and see how long it takes to get CLT.

It's 1.5 hrs from GSO. Flow through to AA. Seven to 10 years? You're at AA.

You're done assuming the current system stays in place.

Want to have more options? Get your four yr degree. There are online degrees available for pilots. A four yr degree gives you more options under the current hiring system. It might change in the future but reducing weaknesses in your resume is important.

Based on current hiring you could be at a major airline within 10 years. No guarantees.