Using 2 year old inputs certainly helped.
Thanks for all your replies. Glad it went through.
What are the best wallets to use now? Do people still use QT (if yes, whats the best way to install the heavy transactions)? why use QT over online wallets?
The definition of best wallets is subjective. For most, a SPV client would most likely suffice. SPV clients provides the normal features of sending and receiving transactions without needing much resources (Bandwidth, disk space, CPU speed, etc.). An example of SPV Client is Electrum. However, it uses information from a peer that it is connected to and trusts the peer. Full nodes like Bitcoin Core does not trust what other clients says and independently verifies each block. A solution to defeat this problem is running a full node and have the SPV client to connect only to that node.
Bitcoin Core does has a lot of optimization, notably the headers-first synchronization (reduced the initial download time), libsecp256k1 validation (reduced the verification time) and blockchain pruning (reduced the disk space). Blockchain pruning did help lots of people with their disk space but can present some problems with various tasks. The bandwidth problem is still present.
Online wallets are extremely weak in terms of security. Online wallets could potentially allow the owner to make malicious code changes to the site and thus weaken the security. In more extreme cases, online wallets that has control over the private key directly can easily run off with the user's balance. An SPV Client that is open sourced and trusted does not have these issues.
*Note: Your wallet choice does not affect the time taken for transactions to confirm.
