With regards to the current state of things in the Mempool, a fee of 5 sat/byte would place your transaction at about 70mb and that would take perhaps 24hrs to confirm.
5 sat/vbyte would actual put you around 110 vMB from the tip. And regardless of whether he was 70 vMB or 110 vMB from the tip, both have pretty much zero chance to confirm in the next 24 hours. Hashrate is down, average block time is much longer than 10 minutes, and the mempool is continuing to fill. I suspect a 5 sat/vbyte transaction will be dropped from the mempool after the default 14 days before it confirms.Should you be aiming at beating time with lower fees like this and you don't have the patience to wait, its best you always transact a day or 2 days before you actually need the transaction to be confirmed.
I don't think that's good advice. The mempool can do a lot of things in two days. Recently it has gone from requiring 20 sats/vbyte to requiring 200 sats/vbyte, and the opposite is also true. If you transact two days in advance, you could end up with a stuck transaction dozens of vMB from the tip, and you could also paying a 10x higher fee than is needed. It's far better to either transact when you need it and pay an appropriate fee, or keep an eye on the mempool and transact when it is relatively empty, rather than just firing a transaction away and hoping for the best. 
