I'm looking to get my first hifi rig mainly for music listening but potentially also for occasional movies if the setup can cater for it (although this is not important). This will be first hifi setup so I'm looking for some advice on what is the best bang for buck for a beginner. Although one big caveat is I own a pair of Shure SE846 earphones and I'd like to aim for a similar level of detail and bass extension. The budget is up to around £1000 (depending where the bang for buck sweet spot is, I could stretch the budget) and aim to fill a 3x5m room. The main thing is bass extension down to 20Hz (or as low as possible), good detail/transparency and preferably a flat(-ish) response.
My dad had an old Cambridge Audio amp with a Sony CD player and Tannoy bookshelfs and I have always had an interest in hifi so at the very least I have some experience of what goes where. I realise I will probably have to buy second hand and sniff around for deals which I am more than happy to do; and I've also heard that pro equipment is generally better value than consumer which I am also happy to buy since I don't really care about how it looks. So what are the best options for me?
1) 2.1 Bookshelfs + active sub (KEF LS50s second hand seem reasonably priced and an older amp like Marantz PM6004 + an active sub?)
2) 2.0 Floorstanders (2.0 is preferred for me to avoid the sub crossover but none of them seem to extend down to below around 40Hz unless you spend thousands)
3) Second hand pro equipment (I know nothing about this)
I am also considering getting a Chord Mojo/Hugo as a portable DAC and pre-amp (not part of this budget) so I could get a power amp instead of integrated if that makes a difference in any way. So which route should I be looking to go for maximum musical enjoyment? Any advice, watch-its or sensible slaps in the face are welcome!