Some tips needed for my first diy setup!

Hello. I'm looking into buying an used alpine 3527s and some Focal Access 165 A1 tweeters, mids and crossovers, with someFocal integration IS 165 mids and tweeters. l'm wondering if the 4x25w 4ohm is good enough for the speakers id their rms rating is 5-70W and 6-60W. Or will my audio be quite quiet? Also would really appreciate a link or a recommendation for a wiring kit in this situation in Europe!!