Basic questions @ filing taxes. ALL OPINIONS WELCOME (insurance, 2015, deduction)

[TL82]

I have basically zero knowledge about taxes, deductions, credits, etc... I’ve always had a basic return but this year is different....so if you have any input or advice please share.

I live in Florida with my girlfriend and our 2 children.
Kid 1 born in 2015 and stays home with mom for now. (No daycare)
Kid 2 born 2019 so probably irrelevant for now relating to 2018 return.
Girlfriend (and mother of our children) works part time from home making @ $12,000/yr
I work full time and make @ $100,000/yr.
I bought my first house on 2018. (Only in my name, not hers)
All 4 of us have health insurance through my company.

My questions:
Who should claim Kid 1 in order to receive the best ($) return?
I currently claim 1 on my W4, should I be claiming 2 or even 3/4?
Being a new homeowner, what tax breaks or deductions should I be looking at?

I’m debating hiring a CPA for @ $300-$500 or just doing it myself with free software online (turbo, H & R, taxact, etc) ,but would appreciate more knowledgeable opinions before deciding.

Thoughts!?!
Thank you

[alwayssanantonio]

Go downtown to the Riverwalk and do your income tax return. H&R Block has a temp. booth down there
for people strolling through on a paseada.
A short return or intemizing?

[ashbeeigh]

Originally Posted by alwayssanantonio

Go downtown to the Riverwalk and do your income tax return. H&R Block has a temp. booth down there
for people strolling through on a paseada.
A short return or intemizing?

Póster lives in Florida.

[alwayssanantonio]

H&R Block does not have a temporary booth on the Riverwalk. I do not think tax return advice is allowed here on this forum.
So, the reply was only done Ashbeeigh, just in jest. Tongue in cheek. Kidding around. Evidently the querying poster in question thinks, there must be a lot of tax experts here.

Originally Posted by ashbeeigh

Póster lives in Florida.