<font color="blue"> finish mower now and rent a bush hog to do my first cut. My main concern right now is being able to get the field under control. </font>
When I bought my BushHog Squealer, the dealer said that with sharp blades, he could cut my yard to look as nice with a brush hog as with a finish mower. Wow, was I impressed with that comment.
My reality is that the brush hog doesn't come close to a finish mower in quality of cut, especially if you want the grass short. On the other hand, Gatorboy's field looks pretty nice.
If you don't need your field to look "perfect", a brush hog might offer you more versatility when tougher jobs come up. Otherwise, your idea sounds like a good one.
By the way, the light duty Squealer has held up real well for me. It ocassionally shaves rocks and digs dirt (not on purpose) and cuts small saplings to the point it almost stalls my little tractor. Haven't had to change a shear pin so far.
OkieG