I hope it all works out.
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Type in the modpack name (I Rly Want to Build Your House) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select I Rly Want to Build Your House from the list on the left. The launcher will handle everything else!