I'll also says history has shown that sometimes not getting that first choice can weirdly end up working out better.
Lukaku rather than Ba for example.
See people wondering why we haven't git x,y,z in already on loan, rather than thinking that we have two domestic loan spots and limited finances to buy, so if we loan early and certain players become available later in the window - we won't be able to try to get them in.
Take Gilmour - he's likely affordable to buy or loan, we loan him and any other Chelsea player suddenly becomes available to loan, say Broja, Gallacher, Perisic, Colwill, or whoever from there, then we can't even approach them.
So my guess is we have a few lists of contingencies if we buy x then loan for y etc, think when we start it'll be like dominos with several deals happening in a short time actually