I recently bought 2 sets of Kodas 6.5 components. They will be powered by a JL 300/4 amp. Wondering if the amp is the right amp for these speakers meaning will they have enough watts going to them to do their business. Another question is that is it necessary for the other set of tweeters to be installed? What are the pros and/or cons? These will be installed in a Jeep grand cherokee.