Actually, Resorts give (or at least should) tourism equal to double the tile appeal. So, you can double it again for 920 tourism. You can plant woods in places where you won't build any districts. Additionally, if you build a Lumber Mill in those, you get the same amount of production as a Mine after researching Steel, with the added appeal. Of course, if you want a fast victory, the additional Builders needed might not pay off, but it seems you aren't playing for speed.