A wider range of opportunities...
Poo,
Understand that agricultural work is seasonal and when you get your Class 2 rating and other tickets you will still be sweeping floors, pushing aircraft in & out of hangars, mixing chemicals at the pump and, if you're lucky, you can even be a loader driver one day too.
Top dressing was the way many pilots were introduced to low level flying in the past, in the days of subsidized fertilizers, but I suspect those days are behind us. By it's very nature, agricultural flying is seasonal, nomadic and unglamorous.
Once upon a time it was not uncommon for ag operators to have a number of smaller and cheaper aircraft (by current comparison). Today, I suspect that fewer (but larger & more expensive) aircraft are used, therefore allowing less opportunity to get in. Its been a while for me and these are only my observations from afar.
Your ag rating will do your flying skills no harm, but don't be afraid to allow other opportunities to present themselves.
O.