Frodo, Reluctant Adventurer being healed by Aragorn is a great combo to counter archery, Sauron grind or even small Uruks.
Hollin is a site 4, so it must replace
Moria Lake.
Hobbit Intuition and
Hobbit Stealth are always good cards to have.
Noble Intentions can replace them in case you don't have those cards. It's always good to carry a skirmish event to protect Frodo, in case your opponent pulls an event to overwhelm him or tries to assing many minions to him. You have
Boromir, Son of Denethor to do the same anyway...
There And Back Again is great to protect Frodo, even better with
Frodo Reluctant Adventurer reducing it's cost to 0. Try to add 1 or 2 copies of
Bounder. 2 copies of
Hobbit Sword may be enough in a small deck, as long as you have other cards to support him like Boromir,
There And Back Again or skirmish events; pack 3 copies of
Hobbit Sword if you include Merry or if you want to make Sam a lasting companion. Rosie Cotton is a great addition if Sam will make it to site 9...
If you have more copies of
Athelas, you can replace the 2nd Aragorn with it, to get the same healing but being able to heal any companion instead, and carry that healing potential until needed.
Ranger's Sword, Blade of Aragorn (
4U132) is a great card, it's strange it came as the only non-FOTR block card in the pack you bought but if your friends don't have any problem with that card being played with FOTR sites,
don't remove it. The only alternative Aragorn has in FOTR block is
Ranger's Sword (
1U112); the
Sword of Gondor is too a Set 4 card (Towers Block).