Setting up PostGis on Amazon RDS

Question

Ok, so I am fairly new to RDS and AWS, but I can't for the life of me, get my database that I created on my laptop, onto amazon RDS, I did move it to my test VPS and also my desktop machine, with no problems at all, here is what I have tried so far..

create extension postgis;
create extension fuzzystrmatch;
create extension postgis_tiger_geocoder;
create extension postgis_topology;
alter schema tiger owner to rds_superuser;
alter schema topology owner to rds_superuser;

CREATE FUNCTION exec(text) returns text language plpgsql volatile AS $f$ BEGIN EXECUTE $1; RETURN     $1; END; $f$;
SELECT exec('ALTER TABLE ' || quote_ident(s.nspname) || '.' || quote_ident(s.relname) || ' OWNER TO rds_superuser')
  FROM (
    SELECT nspname, relname
    FROM pg_class c JOIN pg_namespace n ON (c.relnamespace = n.oid) 
    WHERE nspname in ('tiger','topology') AND
    relkind IN ('r','S','v') ORDER BY relkind = 'S')
s;        

GRANT ALL PRIVILEGES ON DATABASE testgetwork TO luke;

Then I connect to the database and try and load my local copy of the new database...

luke@l-xps:~$ psql --host=myhost.dns.us-west-2.rds.amazonaws.com --port=5432 --username=luke --password --dbname=testgetwork < testgetwork.sql 
Password for user luke: 
SET
SET
SET
SET
SET
ERROR:  schema "topology" already exists
ALTER SCHEMA
CREATE EXTENSION
ERROR:  must be owner of extension plpgsql
CREATE EXTENSION
ERROR:  must be owner of extension postgis
CREATE EXTENSION
ERROR:  must be owner of extension postgis_topology

<more output, removed to save space>

ERROR:  permission denied for relation spatial_ref_sys
invalid command \.
 setval 
-------- 
      1
(1 row)

 setval 

<more output, removed to save space>

My question is, how can I move on from here? All of the features just seemed to be blocked by a permissions problem, by user luke is part of the rds_superuser group, does anyone who has experience with PostGis and RDS know how I can rectify this?

testgetwork=> \du
                                  List of roles
   Role name   |                   Attributes                   |    Member of    
---------------+------------------------------------------------+-----------------
 luke          | Create role, Create DB                         | {rds_superuser}
 rds_superuser | Cannot login                                   | {}
 rdsadmin      | Superuser, Create role, Create DB, Replication | {}

Answer 1

The official guide for setting up PostGIS on RDS is here.

That worked for me.

I am still having issues import my data, getting:

...
must be superuser to create a base type
permission denied for language c
....

Any ideas on those?
Also, is it possible to log in as rdsadmin?