Depends I guess, you can make it work.
But it's gonna be work. Your being assertive, but on another level as Slim said your handing her the ball. She will test how much time and energy you will put into getting laid and use that as a framework to further her own agenda.
I'd be more inclined to "subconsciously" let her know your interested. Then on a "conscious" level be friends that are cool. Play dumb until she's actually in your bed haha, then play dumb more until she initiates lol.
"I had no idea you felt that way. I thought you just wanted to be friends
"
Either way will work, the second way will more easily set things up to get loot. Whereas, talking sexually in a text message will more likely relive the tension and it takes time for it to rebuild. It is very effective if used as a tool to establish frame though. Just say smartass things while purposely dancing around being explicit.
For example.
Her: *being smart
You: Better watch it
Her: Or what?
You: I'll decide
Her: You will decide nothing
You: I'll decide everything, I make the rules lol.
Same context of obtaining control as your messages but it purposely creates more tension instead of releasing it. If your upfront it becomes less about game and more about if your clout is good enough to fuck with her.