Alright guys. An update.
After weighing my options for an entire day ive decided to do the following.
a)take my switching speed down to 735kHz (so allow for delays due to mosfet driver and for a higher power efficiency)
b)go for a 4 N-Channel Mosfet H Bridge
c)Use the LTC1693-2 as my Mosfet driver because it can adequately supply voltage to drive the N Channels high side and two has outs; an inverting an non inverting, and looks to use little external components (as shown in the schematic ive attached)
Datasheet:
http://cds.linear.com/docs/en/datasheet/1693fa.pdfd)Ive decided to use these N channel Mosfets (IRF6710) becauase of there fast switching times, ability handle my 8A current, a low gate voltage (4.5v) so I will be able to drive these mosfets high side with 12v, and a gate capacitance of 1190pF which the LTC1693-2 can hopefully handle.
Datasheet:
http://www.irf.com/product-info/datasheets/data/irf6710s2pbf.pdfSo now im wondering if any of you could recommend me a better Mosfet driver. Preferably one that can switch faster and handle a high gate capacitance so I can choose a mosfet with even faster switching speeds and a lower rds(on). Im having trouble finding one because it doesn't seem like that many have an option for inverted outputs.
O and also if any one could do a quick sanity check to OK my Mosfet driver and mosfet selection.
Thanks.