i bought a pair of Beyma 6.5" midbass speakers (8ohms) and a pair of boston acoustic tweeters (4ohms) i am running them in my front doors. i was wondering if i can hook up a beyma speaker and a tweeter to a channel. since the tweeter has a cross over network it wod not damage the tweeter with frequency changes. um what ohm load will that make on each channel.

my amp is a mtx 400 watt 2channel amp ratings are:

150x2 @ 4ohms
200x2 @ 2ohms

how much power will each set get and if i run them will i need a separate crossover?