Putting the blackgaol knight where he is is a frankly hilarious statement of how the DLC is gonna be. I'm good enough at the games to beat everything without cheese or summons (I do think that summoning is fine, I just don't personally enjoy it unless it's an NPC I like), but I find that some Elden Ring bosses push the edge of what I have the reaction speed for. Morgott and Maliketh were particularly troublesome for me. I haven't gotten to anyone in the DLC that has hit that mark of pace yet, but I assume someone will
I'm not super knowledgeable on racing games, but I'm happy to try to help! What have you got available and what do you like?