Will I lose progress if I unlock items and bases before starting the first mission?

I conquered all the bases in Just Cause 3 and haven't done any mission/upgrade. I was wondering when I start the first mission will I lose all the bases and my best guns and then have to start from scratch from that mission? Or will I have everything including guns weapons vehicles and keep all my conquered bases when I do the mission and unlock the wingsuit and everything else that comes with the missions?

Solution 1:

After completing only two or three missions, I went through and liberated every single province in the game.

Now playing the missions all the bases, vehicles, and equipment I had liberated / unlocked are still available.

This actually makes some of the missions extremely easy, as instead of having to drive a tank through enemy territory, it is a relatively easy drive from beginning to end.

Solution 2:

You should not lose guns or upgrades.

However, if you haven't unlocked the wingsuit yet (which I am pretty sure unlocks during the tutorial), there is still a copious amount of gameplay for you to complete. There are three islands, and the first part of the game is only on the first.

Source: 200+ hours in JC3