Bro I don't think you can go wrong either way.
The Fina for 6-8 weeks will give you some nice results.
Adding the test will only help you along.
My first cycle was Fina only 75 mg EOD. Good lean gains and no sides for five weeks.
Added test @ 300 mg/wk and upped the Fina to around 100 mg EOD in...
You'll start to feel some results in the next few days and will see some shortly after that. Then the cyp will kick in.
Just my .02 but I would leave the cyp @ 500 or even drop it to 400 since this is your first cycle. IMO 750 is overkill for your first.