if this is the first year for corporate return, you may want to use a pro. there are many things that as a stockholder and employee that you need to do. some of these things are beyond the scope of what TT live can offer. for example the need to take a reasonable salary. the need for workman's compensation insurance (may not apply in all states) even if you are the only employee. in one state, i read that failure to have it can result in a $5,000 fine. the possible need to register with state - payroll, sales, income and other taxes or for other reasons.
how to keep good records for the Corp, so if the IRS ever comes calling, they can quickly finish and leave return as filed.
by the way if you didn't file and extension for the corp by 3/15/19, it is now late and there can be substantial penalties even if no taxes are due.
