Since you're at 90 right now, take a sanitized spoon and stir the wort, creating a whirlpool. This will help accomplish a couple things. One, all or most of the hops/grain should form in the center once the whirlpool settles. Then you can siphon from the side of the kettle. Second, it will help bring the temp down a bit. Lastly, it will aerate the wort some (you should still aerate in the fermenter though, either by shaking or using some other aeration method).
You can whirlpool as long as you want, but a minute or two should be enough.
Congrats on your first batch!!