If you fuel up in TX then you don't need to worry about a Cetane booster and you don't need to worry about an anti-gel.
You would just need a lubricant (even 2-cycle oil) and some would also suggest a detergent or an additive with both.
Stanadyne is popular but expensive compared to Power Service...both of these are the more popular brands.
For oil, several guys like the ArchOil AR9100, but it is expensive and I know I am in the minority but it didn't seem to make any difference with my 7.3. Atleast not $44 worth.