100mph in a buggy isn't too hard
I wouldn't buy those alloy wheels, you'll bend them & end up throwing them away. Buy pre-mounted belted tyres (not sure if the Ofna's are still available) like GRP M01's
http://www.grpgandini.it/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=66&category_id=25&option=com_virtuemart&Itemid=6〈=en
Use your choice second motor/esc combo for pure speed runs only (will get way too hot after a few passes) otherwise get the 2200 combo & run 6S but be prepared to gear down a little to manage heat while you're not trying to set records
Lower all the shocks (6-8mm) by installing fuel tube internally on the shafts
For speed runs; gear it to the moon, don't run at night & make sure there are no kids or animals around
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