visit Visa or family visa

I want to get my family to Qatar and I'm having two options.
Option 1 - Get them on visit visa on April and transfer to family visa on June. This is because as I know I need 6 month bank statements and 6 month will complete on June.
Option 2- Get them on June on Family visa
I'm preferred the option 1 since I need to get them here soon.
Is it difficult and costly to transfer visit visa to family visa?
what is you opinions?
Please contact [email protected]
Thanks for comments. Salary is more then QR 12,000.
Try to Bring them on Visit and once they reached transfer to RP
visit to family transfer cost qr 700
what is your salary.all depends on it.