Ranking multiple keywords... Pointers please?

I have numerous keywords for different pages of my site. I want to increase my rankings. I want the site to last long-term so I'm sticking to high quality links. Unfortunately, this is expensive.

I can afford to buy one top quality guest post package on the BHW Marketplace, now here's my question:

Should I point all the links to my homepage, or should I target one specific keyword page? It's all of my inner pages I need ranked. Would building high quality links to my homepage boost the rankings of all my inner pages or will it be inneffective? Would 10 guest posts make a difference or will I need 20? I wouldn't mind increasing the DA/PA of my homepage as I assume it will make me rank better sitewide and make me harder to overtake on the SERPs. I notice most sites above me in the rankings have higher Domain Authority. Maybe I'm wrong. The site's I'd be getting links from have a DA of 35+ if I remember correctly and PR of 3+ or something roughly.

Would love if you could chime in

Start with 3 - 5 important pages with good keyword search volumes. You should then scale things after you start seeing results. If you try to do it all at the same time, you will not get anywhere with it.

Start taking up the low hanging fruits firstly, take up these one by one. Make a parasite network.

Alexanderizer said:

Start with 3 - 5 important pages with good keyword search volumes. You should then scale things after you start seeing results. If you try to do it all at the same time, you will not get anywhere with it.

Click to expand...

I've already got a bunch of pages to top 5 in Google, including my main inner page for the biggest keyword. The thing is, I have like, 100 pages I need ranked still and some of them are slightly competitive. Some are ranked top 3 but I want them to be shifted up slightly.

Is it unwise to target the homepage?

StraussCan said:

Start taking up the low hanging fruits firstly, take up these one by one. Make a parasite network.

Click to expand...

I got a fair amount of easy keywords ranking first, second or third. But I have so many inner pages that need ranking, beside that I'll be adding a bunch of new ones every now and then.

Number of guest posts (or links in general) need to rank a site/page will probably depend on competition of the nice you are competing in. Try to analyze how many links from high quality domains have your competitors...