Redriecting a Domain & Rankings

Hi guys,

Here is the situation im in. Ive changed the niche etc , but the example is pretty close.

I launched a blog in 2013 about dog grooming. This was a branded domain, lets say it was called

The www.bonehouse.com (completely made up)

I noticed there was a particular brand of dog collars that had massive search volume for discount codes for their online site.

Lets call this imaginary brand "www.littledogcollars.com" - compeltely made up.

I set up a page on my blog bonehouse.com/little-dog-collars-discount-codes/

I saw the potential in this so set up a separate website

www.cheapdogcollarsdiscounts.com

I basically made the homepage a similar page to bonehouse.com/little-dog-collars-discount-codes/. Re-wrote and expanded on the content, but the purpose of this page was the same.

I was ranking 1st in 2014 for half a dozen money terms, but over time im not sitting at position 9-10 for these half a dozen terms.

This website is hard to acquire links to because of the blatant affiliate nature of it. Many sites wont link out to "cheap" in the URL's, its a blatant affiliate site so some forums dont like me linking to it etc.

I still have my bonehouse.com/little-dog-collars-discount-codes/ which ive not updated in over a year, and that sits on page 6 and page 7 for the same money terms aswww.cheapdogcollarsdiscounts.com.

My plan is to;
1 - Use www.bonehouse.com as an authoritative site and provide insightful blogs.
2 - Have all brand discount code pages as their own pages on bonehouse.com/brandname-discount-codes/
3 - Transfer all content from www.cheapdogcollarsdiscounts.com to www.bonehouse.com
4 - Redirect www.cheapdogcollarsdiscounts.com homepage to bonehouse.com/little-dog-collars-discount-codes/
5 - Redirect all ier pages (other brand discount code pages) to bonehouse.com/brandname-discount-codes/

I have a few thoughts/conces

I haven't updated bonehouse.com in a long time - however it gains traffic is ranking for more key terms than www.cheapdogcollarsdiscounts.com (not all discount code terms).
The content on bonehouse.com is more "bloggy" and less affiliate content.
I would drive bonehouse.com as a brand of insightful and useful info, interlinking blogs and guides to the discount code pages.
I would use the blogs and guides as my linkable assets in "whitehat" outreach.
I would web 2.0 and PBN links to the brand discount code pages.

My main conce is, because www.cheapdogcollarsdiscounts.com is driving some traffic (despite the gradual decrease in rankings) - would these rankings transfer to bonehouse.com/little-dog-collars-discount-codes/ .

Id anticipate that untill google has reindexed the site wide redirects from www.cheapdogcollarsdiscounts.com, then www.cheapdogcollarsdiscounts.com would still appear in positions 9-10, but when a user clicks, they would obviously land on bonehouse.com/little-dog-collars-discount-codes/

Once google has crawled and reindexed everything (id produce a new site map of bonehouse.com and submit once ive migrated everything over to help speed the process up) would bonehouse.com/little-dog-collars-discount-codes/ then appear in the SERPS in positions 9-10 ?

Remember bonehouse.com/little-dog-collars-discount-codes/ already appears in the SERPS between pages 6-7 (and nothing has been done to the bonehouse.com site in over a year)

My main conce is that I lose the rankings im currently getting for www.cheapdogcollarsdiscounts.com, and bonehouse.com/little-dog-collars-discount-codes/ doesn't get much of an uplift from the redirect - so i'd lose what little traffic (and money)

Im currently getting.

Hope this makes sense, and i'd appreciate any further input or advice.

Thanks