Really depends on if you use a guide or not and OSRS gold if you screw up - I always wind up forgetting 1 item and quests wind up taking me a bajillion hours. Dragon defenders are somewhat simple to get:-RRB- 15 minutes if you're lucky. 15 minutes if you already have tokens and therefore are lucky maybe. I would say you are more likely considering roughly a few hours, probably more.
Priest in Peril, Lost Tribe, ANimal Magnetism, Wolf Whistle are super short and should not take over an hour or so every. Ghost's ahoy and Fremmenik Trials are a bit longer but neither of these are very lengthy. Training and Slaying equipment ought to be basically the same and depends slightly on which you are fighting. It is likely that though you will still only be cannon fodder for the 138s if they decide to play. I am 115 combat and also the best I could do is potentially slow down the hardcore players down for a few seconds.
Soul wars, doesn't matter in any way. Range weapon maybe to maintain activity up but if you are on the worlds that are crowded it doesn't matter what you do so long as you hit something once every few minutes. It'll be the barragers, chinners and 138s using 99 slay that will rule the day. I would just ignore soul wars all together. Barrows, read a manual. Find your method and adjust your equipment according to what it urges.
If you can get a Tokkul-Zo, do this rather than an archer's ringin regards from the elder kiln quest and has +4 in all combat stats anyhow prayer and buy RuneScape Mobile gold strength, which makes it simpler than the archer's ring. An amulet of ranging is probably a better thing to buy than a fury: it's a higher ranged attack bonus though it defends you marginally less well and does not have any prayer bonus.