This is a prestigious achievement for a team that has recently been promoted to the premier league. And of course to maintain it, Nottingham should be spend a lot of money to buy potential player to compete on champions league. But, I think with the current squad, The Forest is still good to continue it, they just need some player to cover existing players. They also need buy at least one attacker to layer Wood on front. So, with the remaining matches, The Forest doesn't really face difficult opponents, maybe a little bit when they face MU, Aston Villa, and Chelsea, but if you look at their performance, all those opponents they will be able to get through with use the same strategy and squad.