If you want the same brand head unit and speakers, you are kinda limited. There are lots of good head units and lots of good speakers and amps, but you will have a hard time finding a single company for all of it.
Head units, I would go with Alpine, Kenwood, Clarion or even Sony. Speakers, any of the top brands are good. JBL, Polk, JL Audio, Kicker to name a few.
Ocean led are nice but way overpriced. Lots of people have had great results with oznium and saved a ton of money.
You can buy the bimini brackets on ebay. I may even have a couple spares. Post a pic of what you need.