Is $1,300/m a competitive offer and is it possible to increase the monthly rent if they bring in more service providers on the cell tower?

I have a 1.25 acre commercial lot along a highway. I was approached by a company to put up a cell tower on behalf of T-mobile. The soft proposal (with limited information) is $1,300 / month for a 30-year lease for a 50’ x 50’ area on the property. I have requested the formal proposal/ contract to review the additional terms and that is pending.

I’ve read some great posts such as to add an inflation clause (i.e 3%- 4.5% yearly), remove the first right of refusal, insurance, etc.

However, is this a competitive offer as far as monthly rent or could it be higher? And is it possible to add a clause to increase the monthly rent if they bring in more service providers on the cell tower?

Any advice / guidance is appreciated.